Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/65-16 | 225/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.98 (659.9) | 25.97 (659.7) | -0.01 (-0.2) -0% |
| Width inches (mm) | 7.68 (195) | 8.86 (225) | 1.18 (30) 15.4% |
| Circum. inches (mm) | 81.62 (2073.14) | 81.59 (2072.51) | -0.02 (-0.63) -0% |
| Sidewall Height inches (mm) | 4.99 (126.75) | 3.99 (101.25) | -1 (-25.5) -20.1% |
| Revolutions per mile (km) | 776.28 (482.36) | 776.52 (482.51) | 0.24 (0.15) 0% |
225/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.99 mph (32.18 km/h) |
| 25 mph (40.23 km/h) | 24.99 mph (40.22 km/h) |
| 30 mph (48.28 km/h) | 29.99 mph (48.27 km/h) |
| 35 mph (56.33 km/h) | 34.99 mph (56.31 km/h) |
| 40 mph (64.37 km/h) | 39.99 mph (64.35 km/h) |
| 45 mph (72.42 km/h) | 44.99 mph (72.4 km/h) |
| 50 mph (80.47 km/h) | 49.98 mph (80.44 km/h) |
| 55 mph (88.51 km/h) | 54.98 mph (88.49 km/h) |
| 60 mph (96.56 km/h) | 59.98 mph (96.53 km/h) |
| 65 mph (104.61 km/h) | 64.98 mph (104.58 km/h) |
| 70 mph (112.65 km/h) | 69.98 mph (112.62 km/h) |
| 75 mph (120.7 km/h) | 74.98 mph (120.66 km/h) |
| 80 mph (128.75 km/h) | 79.98 mph (128.71 km/h) |
| 85 mph (136.79 km/h) | 84.97 mph (136.75 km/h) |
| 90 mph (144.84 km/h) | 89.97 mph (144.8 km/h) |
| 95 mph (152.89 km/h) | 94.97 mph (152.84 km/h) |
| 100 mph (160.93 km/h) | 99.97 mph (160.89 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1976 | 2296 | 2472 | 2582 | 2699 | 2783 | 2876 | 2985 | 3137 | 3288 | 3456 | 3591 | 3834 | 4104 | 4314 | 4448 | 4524 | 4801 | 5188 | 6029 |
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